Temperature dependence of ion-beam mixing in Fe/Zr bilayers

Conference · Sun May 01 04:00:00 EDT 1988

OSTI ID:6510221

Ding, Fu-Rong; Okamoto, P R; Rehn, L E

Ion-beam mixing results obtained as a function of temperature during 1 MeV Kr irradiation of Fe/Zr bilayer films prepared by vapor deposition onto oxidized Si substrates are reported. RBS measurements of W marker shifts showed that Fe atoms diffuse faster than Zr atoms do during irradiation. X-ray diffraction using a Read camera indicated the formation of an amorphous phase during mixing. Activation enthalpies of 1.4 eV for mass transport at temperatures above 480 K, and 0.07 eV at temperatures between 330--470 K, were extracted from the measurements. A comparison of the mixing of Fe/Zr with that in Au/Zr and Ni/Zr bilayers reported previously shows that Fe atoms in Fe/Zr bilayers mix much more slowly than Au atoms in Au/Zr and Ni atoms in Ni/Zr. Mixing differences in both temperature intervals correlate well with calculated heats of mixing in the various bilayers, but show essentially no correlation with existing thermal diffusion data. 13 refs., 4 figs.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6510221
• Report Number(s): CONF-8806145-3; ON: DE89005872
• Country of Publication: United States
• Language: English

Related Subjects

656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARRHENIUS EQUATION
BEAMS
COMPARATIVE EVALUATIONS
DIFFUSION
ELEMENTS
ENTHALPY
EQUATIONS
FILMS
ION BEAMS
IRON
LAYERS
METALS
MIXING
PHYSICAL PROPERTIES
SEMIMETALS
SILICON
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
ZIRCONIUM